Hummer H3. Manual — part 1164

The frame support bracket rod (2)

The exhaust pipe hanger rod (3)

Installation Procedure

Fig. 21: View Of Exhaust Pipe Hanger
Courtesy of GENERAL MOTORS CORP.

IMPORTANT: Do not use oil base lubricants.

2007 Hummer H3

2007 ENGINE Engine Exhaust - H3

1. Apply a soapy solution to the following in order to ease the installation of the hanger (1):

The frame support bracket rod (2)

The inner diameter of the exhaust pipe hanger (1)

The exhaust pipe hanger rod (3)

2. Press the exhaust pipe hanger (1) over the following:

The frame support bracket rod (2)

The exhaust pipe hanger rod (3)

3. Lower the vehicle.

MUFFLER REPLACEMENT

Removal Procedure

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .

CAUTION: Refer to Exhaust Service Caution .

CAUTION: Refer to Protective Goggles and Glove Caution .

2007 Hummer H3

2007 ENGINE Engine Exhaust - H3

Fig. 22: View Of Rear Right Wheel Suspension Assembly
Courtesy of GENERAL MOTORS CORP.

2. Complete the following in order to gain clearance to remove the muffler:

1. Remove the lower shock absorber nuts (9) and bolts (8).

2. Remove the right rear leaf spring nut (2) and bolt (1).

3. Wedge a block of wood (5) between the frame (4) and the rear axle (6).

IMPORTANT: Use care not to over extend the rear brake hose.

2007 Hummer H3

2007 ENGINE Engine Exhaust - H3

Fig. 23: View Of Nuts Securing Muffler To Catalytic Converter
Courtesy of GENERAL MOTORS CORP.

3. Remove the nuts securing the muffler to the catalytic converter.

2007 Hummer H3

2007 ENGINE Engine Exhaust - H3